Lock



C. E. ANDERSON.

LOCK. APPLICATION FILED MAR. 3.19119.

Patented Aug. 3Q, 1921,

PATENT OFFICE.

CARL ERIC ANDERSON, 0F WORCESTER, MASSACHUSETTS.

LOCK.

Specification of Letters Patent.

' Patented Aug. 30, 1921.

Application led March 3, 1919. Serial No. 280,298.

To @ZZ 10 kom t 'naa-y concern:

Be it known that I, CARL E. ANDERSON, a citizen of Sweden, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented a new and useful Lock, of which the following is a specification.

This invention relates to a lock articularly designed for use on automobllesand refrigerator' doors, and on other similar structures.

Such a lock to be satisfactory must permit easy closing of the door and must hold the door positively when closed, but at the same time must be readily releasable. Provision must also be made to prevent rattling of the door, and the necessity for accurate relative adjustment of the door and casing must be avoided.

It is the general object of-my invention to provide a lock in which these requirements are fully met and in which the mechanism is of the simplest and most' reliable construction.

With this general object in view, my improved lock in its preferred form comprises a striker, a casing having a latch pivoted therein, a locking member for said latch, a

releasing device, and certain necessary connectionsbetween said parts by means of which' they aire operatively related.

An important feature of my invention relates to the provision of alocking member so constructed that it will hold the latch positively locked at any point in a considerable range of locking positions. Another feature relates to the provision of a single spring continually tending to move the latch to inoperative position, and also to move the locking member to operative position.

y invention further relates to arrangements and combinations of parts hereinafter described and more particularly pointed out in the appended claims.

preferred form of my invention is shown in the dra-wings in which- Figure 1 is a front elevation of a portion of a door and casing with my improved lock applied thereto; A

Fig. 2 is a side elevation of the lock with a portion of the casing broken away;

Fig. 3 is a sectional elevation showing certain parts in locking position;

Fig. 4 is a sectional plan view taken along the'line 4,-4 in Fig. 1, and

Fig. 5 is a detail sectional view taken alongthe line 5 5 in Fig. 1.

Referring tothe drawings, I have shown a portlon of a casing l0 and a door 11 of any usual type, the lock in this instance being mounted upon the door and the striker upon the casing. It will, however, be understood that the reverse arrangement is optional.

The striker shown comprises a plate 12 secured in a shallow recess 13 by screws 14 and having a lug or projection 15 forming the striker proper.

The casing for my improved lock iS mounted in a recess in the door 11 and comprlses a body portion 16 and a cover 17 preferably held in position by a screw 18 at the lower end and by screws 19 at the upper enti. A latch 2O is pivoted in the casing, preferably upon the screw 18, said latch having three outwardly extending portions 21, 22 and 23. The portion 21 normally projects into the path of the striker 15 when the door is open, and the portion 22 engages the rear face of the striker as the door is closed, as clearly indicated in Fig. 3. The portion 23 of the latch extends upward and coperates with a sliding locking member 24.

In the form shown in the drawings, the member 24 fits inside of the casing member 17 and is slidable longitudinally therein. The member 24 is preferably formed of sheet metal and has a portion 25 at its lower end bent upward and inward to form a wedgeshaped projection engaging the arm 23 of the latch 20.

When the parts are in normal inoperative position, as shown in Fig. 2, the arm 23 supports the locking member in raised position. When, however, the latch is engaged and moved by the striker 15, the locking member is released and moves downward in wedging relation to lthe arm 23, thus taking up all loose play between the parts and positively locking the latch in every position thereof.

A manual releasing lever 26 is pivoted at 27 to a plate 28 secured to the door-frame, and is provided with a handle 29 extending through a slot 30 in the plate 28 and readily grasped for releasing the latch. The lever 26 has a pin and slot connection with the upper end of the locking member 24, as indicated at31 in Figs. l and 4. The end of the lever 26 is also connectedby a s ring 32 with the arm 22 of the latch 20. 'Ihe spring 32, acting through to inoperative position through the medium of the spring 32, the spring tending at all times to move the locking member to operative position and the latch to inoperative position.

From this description it will be also evident that I have provided a lock in which the locking member positively engages the latch in every locking position, forcing the latch against the striker and eliminating all loose motion between the parts.

The spring 32 is also effective to hold the lever 26, the locking member 24 and the latch 20 under tension at all times, so that no rattling of the moving Vparts is possible.

`Having thus described my invention and a certain application thereof, it will be evi-- dent that changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope thereof as set forth in the claims, and I do not wish to be otherwise limited to the details herein disclosed, but what I claim 1. A lock having, in combination, a striker, a casing, a latch pivoted therein, a locking member, and yielding means tending continuously to move said latch from operative to inoperative position and to advance said locking member to operative `po` sition, said locking member being held in inoperative position by said latch when the latter is in inoperative position, and when released, being movable directly toward said latch and being e'ective to advance said latch toward full operative position and to positively lock said .latch in every advanced position thereof.

2. A lock having, in combination, a striker, a casing, a latch pivotally mounted in said casing, and a locking member mounted to slide in said casing and eective to hold said latch in engagement with said striker, a lever connected to move said locking member, and a spring connected at one end to said lever and at the other end to said latch and continually tending to move said locking member to operative position and said latch to inoperative position.

3. A lock having, in combination, a striker, a casing, a latch pivotally mounted in said casing, and an inner locking member iitting within said casing and slidable bodily longitudinally of said casing, said member when released being effective to press said latch in continuous engagement with said striker and to lock. said latch against reverse movement until manually moved to inoperative position.

4. A lock having, in combination, a striker, a casing, a latch pivotally mounted in said casing, a locking member mounted to slide in said casing and effective when released to hold said latch in engagement with vsaid striker, and a lever having a positive connection to said locking member and a yielding connection to said latch and eiective to move said member and latch successively to inoperative positions.

5. A lock having, in combination, a striker, a casing, a latch pivotally mounted in said casing, a locking member movably mounted in said casing and held in inoperative position by said latch when the latter is in inoperative position, and means in said casing tending continuously to move said latch to such inoperative position as soon as said locking member is withdrawn, said locking member, when released by said latch, being effective to move said latch into positive engagement with said striker, and to hold said latch positively in Such engagement.

In testimony whereof I have hereunto aiiixed my signature.

CARL ERIC ANDERSON. 

